<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<script src="../js/vue.min.js" ></script>
<body>
<h1>你好</h1>
<div id="app">
    <span v-bind:title="message">
    鼠标悬浮几秒查看动态绑定的信息！
    </span>
</div>
<script>
  let vm=new Vue({
    el:'#app',
    data:{
      message:'hello vue2'
    }
  });

</script>

</body>
</html>